We also offer a 14 day satisfaction window (starting from date the device is received) for the tune itself to ensure proper operation in your vehicle. Please read the full warranty & policy information at this page: GDE Warranty/Policy Info

Bought a 2007 ML 320 CDI for my wife after researching this tune. After the tune was installed (a very easy procedure, zero mechanical ability required, just some tech savvy), it instantly had a boost in power and decline in the turbo lag. You can now hear the turbo growl more, which some might not wish for in a Mercedes, but it is only really apparent when pushing the throttle hard. When at cruising speed, it is as smooth as ever. For a full-time AWD vehicle, it is getting low 20s for MPG for city driving and high 20s to low 30s for highway. Great way to spruce up a 10 year old vehicle and get more life out of it!

We also offer a 14 day satisfaction window (starting from date the device is received) for the tune itself to ensure proper operation in your vehicle. Please read the full warranty & policy information at this page: GDE Warranty/Policy Info

Bought a 2007 ML 320 CDI for my wife after researching this tune. After the tune was installed (a very easy procedure, zero mechanical ability required, just some tech savvy), it instantly had a boost in power and decline in the turbo lag. You can now hear the turbo growl more, which some might not wish for in a Mercedes, but it is only really apparent when pushing the throttle hard. When at cruising speed, it is as smooth as ever. For a full-time AWD vehicle, it is getting low 20s for MPG for city driving and high 20s to low 30s for highway. Great way to spruce up a 10 year old vehicle and get more life out of it!